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Momona Ethiopian Journal of Science MEJS V8 2 193 212 2016 ©CNCS Mekelle University ISSN 2220 184X Assessment and Evaluation of Volcanic Rocks Used as Construction Materials in the City of
4 ·MOT Type 2 is a crushed aggregate that is ideal as a sub base for roads driveways and paths when compacted with excellent load bearing properties MOT Type 2 is a blended crushed aggregate product which provides a free draining base making it perfectly suited for walkways and garden paths
·problems and human diseases Hence an alternate for the crushed granite stone has got to be explored the current investigation envisages the potential utilization of river stone as a rough aggregate in replacement of crushed stone aggregate in
·Construction aggregate is the sized or crushed and sized rock material used in concrete and asphalt which make up most of highways bridges houses and other engineering works Pumice and scoria are more widely used for hollow and solid concrete block production in Ethiopia Normal weight aggregate is generally produced in Ethiopia by
2016 In this study suitability of aggregates obtained from an aggregate quarry of Balıkçılar village meeting significant portion of crushed stone aggregate demand of construction sector and used in constructions in central town of Ardahan province for concrete production and concrete compressive strength were investigated
·The Ethiopian gravel and crushed stone market was finally on the rise to reach $288M in 2023 after two years of decline In general consumption however recorded a buoyant expansion Over the period under review the market hit record highs at $420M in 2014; however from 2015 to 2023 consumption stood at a somewhat lower figure
·Reta et Journal of Engineering Research and Technology 127 blended with 10/90 20/80 30/70 40/60 50/50 proportions by total weights from the two
·Wastes in C 25 Concrete in Ethiopia Lucy Feleke Nigussie 1 Muge Mukaddes Darwish 2 and Tewodros Ghebrab 2 1 Department of Civil and Environmental Engineering Jimma University Institute of Technology Box 378 available crushed stone aggregate with a nominal size of 20 mm was used The specific gravity water
Introduction Ethiopia one of the fastest growing economies in Africa is witnessing a massive growth in its construction sector This has led to an increase in demand for aggregates and a booming crusher business in the potential of the aggregate crusher industry in Ethiopia highlighting the key drivers for its success and the innovative approaches being
·available crushed stone aggregate with a nominal size of 20 mm was used The specific gravity water absorption and fineness modulus properties of coarse aggregates were checked as per the ASTM
·The primary sources of crushed aggregate are the alluvial deposits and various types of rocks such as; basalt gneiss dolomite and limestone etc Barakat et al 2016 The study area is located in the Eastern part of Ethiopia about 520 km from Addis Ababa The area is bounded by UTM coordinates of 746247 886247E and 994861 1084861N Fig
1 Use of Sandy Materials in Civil Engineering 2 Sourcing and aggregate production for Ethiopian construction industry Sources of aggregate in Ethiopian past present and future trends The natural aggregates are formed as a result of the processes of weathering and abrasion or through crushing a large parent mass [7]
·The production of fine aggregate in Ethiopia is mainly by the process of extracting from river beds and natural deposit Crushed aggregates are also being used in some parts of the
·Crushed basalt aggregate was used as vertically installed stone col umns Stone column material in many practical cases is made of crushed and natural aggregate [29] Pebble gravel with good stiffness can also be used as stone column material Stone columns are commonly provided in group and can be floating or end bearing type [30] The
The shortage of crushed stone aggregate CSA supplies along with the increase in processing and hauling cost have encouraged the use of red ash material are involved into regular practice in various country around the world Key Words CBR CSA GB1 LAA Mechanical blending red ash Strength 1 INTRODUCTION Currently Ethiopian government
·According to [21] crushed ceramic fine aggregates had % water absorption compared to 5% for river sand hence recommended that crushed ceramic be used when saturated surface dry condition to
·Construction aggregate is crushed rock material used in concrete which make up most of engineering works The main objective of this research was to assess the quality of coarse aggregates and evaluate their suitability for concrete of the limestone rock material sources in Mekelle area northern Ethiopia Ethiopia Key words coarse
·2 Sourcing and aggregate production for Ethiopian construction industry Sources of aggregate in Ethiopian past present and future trends The natural aggregates are formed as a result of the processes of weathering and abrasion or through crushing a large parent mass [7] Engineers are first of all concerned with technical requirements
·The result showed that both crushed aggregate and leg gravel aggregate were within the acceptable limit of ASTM C 33 standards whereas the river bank gravel aggregate insignificant amount
·of the three blended components was starting from a proportion of crushed aggregate cinder gravel and fine soil 100% 0% 0% An incremental of cinder gravel and fine soil and decrease of crushed aggregate revealed that the CBR value at the proportion 40% 48% 12% satisfies the minimum requirement of ERA specification for base course layer
Manufactured/ crushed fine aggregate Crushed fine aggregate or sand is used for aggregate materials having dimensions less than that are processed from crushed rock or gravel and intended for construction use 16 The term sand refers to relatively small particles and there are some variations of sand with regard to particle size
·Sand Crushed aggregate 01 10mm and crushed fine aggregate 00 5mm Sawdust For this rese arch the s awdust was collected from wood manufacturing firm found in J
·Page 1 of 10 Recycling Fine Aggregate from Demolished Hollow Concrete Block for Green Concrete in Ethiopia Lucy Feleke Nigussie1 Muge Mukaddes Darwish 2 and Tewodros Ghebrab 1Department of civil and Environmental Engineering Jimma University Institute of Technology Jimma Ethiopia 2Department of Civil Environmental and Construction
·Technical experts in construction industries are trying to improve the quality ease of using materials in different forms and increasing structure performance However in the changing cost of each item quality of works could be sacrificed In Ethiopia the practice of using alternative ingredients to produce materials was observed weak in some scenarios It was
